I want to be strong!!

I was prepared for morning sickness but i never thought i would be having period like cramps for days on end!!! I'm in pain in waves. Sometimes it's worse than others but literally it feels like the worst day of my period for 5 straight days now. Every night waking up multiple times. I got very concerned and called the doctor who assured me this is fine as long as I'm not spotting but OH MY GOD. I can't focus, I've missed two workouts and I'm mentally and physically exhausted from this. Please tell me the cramping will go away eventually. I feel so defeated.