Some pregnancy tests may clarify your doubts. Pregnancy tests are accurate when they’re used correctly. It's possible to have a false negative, which happens when you’re pregnant but the test says you aren't.
There are various methods to check whether you are pregnant or not. It may includes home pregnancy test, clinical urine test, blood test.
One can go for a pregnancy test if symptoms like sensitivity increment, swollen breasts, nausea, vomiting are noticed.
Rubella serology should be requested if during pregnancy the pregnant woman has contact with an infected person or develops typical symptoms of rubella, such as fever, enlarged lymph nodes and spots on the body. The diagnosis of rubella is made if the serology detects the presence of igm reagent. Another way to make the diagnosis is by comparing igg values at the time of symptoms and after 3 weeks. Even if igm remains negative, if igg values rise more than 4 times in this interval, this indicates that the symptoms were even caused by rubella.