Is there a chance?

Okay. I really need help and amswers. Me and my husband have been trying abt 8 mnths now. No luck. ..my period has ALWAYS been very regular. Like clock work. ..well last mnth (sept) i got my period twice. First time was the very first weekend of semptember. I spotted for 2 days. Then again 10 days later. Except this time ig lasted 4 days. Forst 2 days were spotting. 3rd day was a lil heavier. Amd 4th day was brown. Very unusal for me. ..this mnth i was having some pregnancy symptoms and my period was 8 days late. (Got it yesterday) ive taken 4 walmart hpt. All gave really bad evaps. ..i took a first response oct 7th. The day before my period showed. When i took it there was deff 2 lines there. Both were sprta faint but both were there. After a min or 2 the control line got darker and the test line faded a bit and was vvvf and was lil harded to see. But still there. ....i took a walmart test this mornin amd there was a white line in place of the test line as soon as i took it.