Feeling crazy

i have been having irregular cycles since having nexplanon removed in December. i had a period 8th-14th march. i then had very little light brown spotting on the 6th and 7th of april. i have taken 3 pregnancy tests today and yesterday and im sure i can see a super faint line, not even dark enough to get a photo. when should i test again and which pregnancy tests do people recommend? ☆