Discectomy, what does the future hold?

Hello, I guess I should start from the beginning... I'm 25, a stay at home mum to 3. I've had problems with my back for a few years now which was put down to spinal stenosis. I've been in and out the gym for a long time, but I started to enjoy running in the morning too. My back then started to get worse, so I was referred for physiotherapy. At the end of November to the start of December 2015 I started to get sciatica symptoms, it started just over a week after I started physio, I kept going for a few weeks which was difficult but I wanted to give myself a good start at recovering. I got very bad very quickly on the 18th Feb, I couldn't do anything without being in agony. I was admitted to hospital for a week to try manage the pain, I was given an injection into the nerve ending and sent home. This worked for a day! The symptoms came back with a vengeance, I couldn't do anything, walking only to the toilet, which I'm ashamed to say I didn't make it in time every time. I couldn't sit up. I spend my time on my front with my knees tucked under me, it was the only position that reduced the pain to make it easier to deal with. I was on 50mg of mst, taking oramorph every couple of hours, and a few other meds. My gp was amazing though, he could see the pain was too much, and instead of a referral to surgery, he called a spinal surgeon himself. After getting an appointment the following week the surgeon agreed I needed urgent surgery, thankfully! After my pre assessments I has my discectomy. date for the 14th April 2016! So I've been lucky to be seen to soon. The surgery went to plan, they done all they had to and without any problems. My blood pressure and heart rate caused some issues after the surgery, BP too low, heart rate too high. I was given 2 drips which did improve it temporarily. The results were instant, the pain had reduced, I could sit and walk the next day. There was pain, but nowhere near as substantial. I was sent home 2 days post op, on the ground i my pain medication from the gp Monday morning. Today is Monday, since I've come home I've felt a whole lot worse, i feel ill. I struggle to eat, I keep getting dizzy spells, my heart keeps going crazy, hot flushes, then coldness. If it weren't for this, the recovery would be so much easier. I'm hoping it corrects itself, and doesn't warrant a visit to the gp. I feel I've overdone it and my leg has been very painful today, since this afternoon I've done nothing but worry about my future. Will I recover? Will it get bad again? Will I have a good quality of life? I only found out just before my op there are 3 damaged discs the middle one l4/l5 is the one that herniated. What would that mean for my future? Will that cause more problems? Thankyou for reading Sorry for the panic at the end there Sinead