To start with I could see mine more clearly on the "invert" setting. I had a clearer line at 10 dpo with an IC and a definite line at 11 dpo and that was in the evening with a Superdrug, then 12 dpo I used a FRER. My tests pics are on my profile. I'd get a decent test to use on Tues! Good luck!!!
Cramps and tingles can be normal. I think I was particularly crampy around weeks 5-8. I was worrying myself senseless but lots of women on here reassured me they'd had the same and it was nothing to worry about. OMG I am so excited for you!!!!!!