score:3
No, wou will be admitted, if not for 6 months, then at least for the time needed to catch the connecting flight.
No, with a visa you're not even required to hold a return/onward ticket. Even if you were to enter visa-free as a Swedish citizen, I myself (being Swedish and a lone young male, i.e. a high-risk traveller) have never been asked to show a return flight confirmation (check-in staff in Sweden, however, would check the electronic ticket record, but again none of this matters seeing as you have a visa)