happy but confused?! help please

Sophie
So I'm pregnant I think but yesterday lunch time I took a first response after a 2hr hold at 10dpo. 
Then thinking it'd be stronger this morning with first urine at 11dpo very faint fainter than yesterday. So held wee all morning from 7am til 1pm and got the clearest one yet! Does it matter if they change in appearance? Also do the stomach cramps you get feel like period pain? Are they intimiment or constant? Can't help but worry