help 😫

So I'm new to this and have only recently started trying. I'm 11dpo and woke up a couple days extremely crampy and the last few days have been as well as really gassy. Is that common? 
I did "take" a test last night and was more nervous than anything to take it and pretty sure I hardly peed on it. However I obviously see the very dark control line but also see a second very very very light line (on a first response test), I've read that it may just be an evaporation line but it also says to look for a distinct color and unless I'm going crazy it looks pink to me. 
I didn't want to retest but plan to probably Sunday as AF is due to arrive on Saturday.Â