5 weeks and CRAMPING

Kerry
Anyone else had this, I have had cramping since the beginning of June, first of all I thought ovulation pains then time for my period and I thought period pains. Missed it - I did what felt like 100 tests and they came back Negative. Finally I had a BFP on Friday and did another on Saturday to confirm. I am still getting cramps and I think I'm about 5 weeks. Anyone else had/having this problem should I be worried. 
I have a midwife appointment next Tuesday??