Help !!!!!!!

Laura
Help ladies need some advice I was last on 30th august till 6 september I was ovulating 8th 9th 10th september I have been haven.headachs.sickness.lower back ach and discharge I have done 4 test all neg would it be to early to test.with my 2nd son didn't find out till I was 6 weeks and done 4 test in them 6 weeks and neg