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You have not mentioned about the duration of your cycle. But based on the information provided i take it as 28 days. Ovulation occurs 14 days before the day your periods start. Th life span of ovum is 24-36 hours and that of sperm is 36-48 hours. Hence the days 11-17 of your cycle are considered fertile. If you have had sex during this period the chances of you getting pregnant are very high.
Occasional delay in periods is a common . Just wait for one more week for your periods to come. If your periods don't come in one week , the possibility of pregnancy
You have mentioned that you have been getting signs, but haven't mentioned any.
If you have to confirm pregnancy,then go for urine pregnancy test ( you can perform at home as these kits are freely available over the counter). Just wait for one wek and then go for the Urine pregnancy test.
Wish you a healthy life.